/*
 * Copyright (c) 2017, NVIDIA CORPORATION.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef MANAGED_CUH
#define MANAGED_CUH

#include <new>

struct managed {
    static void *operator new(size_t n) {
        void* ptr = 0;
        cudaError_t result = cudaMallocManaged( &ptr, n );
        if( cudaSuccess != result || 0 == ptr ) throw std::bad_alloc();
        return ptr;
    }

    static void operator delete(void *ptr) noexcept {
        cudaFree(ptr);
    }
};

inline bool isPtrManaged(cudaPointerAttributes attr) {
#if CUDART_VERSION >= 10000
    return (attr.type == cudaMemoryTypeManaged);
#else
    return attr.isManaged;
#endif
}

#endif //MANAGED_CUH
